[VPlan] Add abstract base class for header phi recipes (NFC).

Not all header phis widen the phi, e.g. like the new
VPCanonicalIVPHIRecipe in D113223. To let those recipes also inherit
from a phi-like base class, add a more generic VPHeaderPHIRecipe
abstract base class.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D116304

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/Vectorize/VPlan.cpp b/llvm/lib/Transforms/Vectorize/VPlan.cpp
index 1d9e71663cd2..bebc6bbdd4a7 100644
--- a/llvm/lib/Transforms/Vectorize/VPlan.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlan.cpp
@@ -838,7 +838,7 @@ void VPlan::execute(VPTransformState *State) {
   // vector loop.
   VPBasicBlock *Header = Entry->getEntryBasicBlock();
   for (VPRecipeBase &R : Header->phis()) {
-    auto *PhiR = dyn_cast<VPWidenPHIRecipe>(&R);
+    auto *PhiR = dyn_cast<VPHeaderPHIRecipe>(&R);
     if (!PhiR || !(isa<VPFirstOrderRecurrencePHIRecipe>(&R) ||
                    isa<VPReductionPHIRecipe>(&R)))
       continue;
@@ -1461,7 +1461,7 @@ void VPInterleavedAccessInfo::visitBlock(VPBlockBase *Block, Old2NewTy &Old2New,
                                          InterleavedAccessInfo &IAI) {
   if (VPBasicBlock *VPBB = dyn_cast<VPBasicBlock>(Block)) {
     for (VPRecipeBase &VPI : *VPBB) {
-      if (isa<VPWidenPHIRecipe>(&VPI))
+      if (isa<VPHeaderPHIRecipe>(&VPI))
         continue;
       assert(isa<VPInstruction>(&VPI) && "Can only handle VPInstructions");
       auto *VPInst = cast<VPInstruction>(&VPI);